Fantastic! I didn't even know most of these characters but I loved it anyways! Here's what squares I could figure out:
Kirby, Issac, BladeWolf, Abobo, the evil company from G.I. Joe, a Megaman, Judge Dredd, that creature from that one Newgrounds game I didn't enjoy, Kratos, black & white Pac-Man, Mega-abobo, Blanka, what looks like Captain Falcon, creature from the black lagoon, Spider-Man symbol, X, Clone Trooper, Father, Bomb, Skull, Human, Blue & red Rubix cube, The Slender Man, We are annonymous, Deadpool, Xenomorph (I think), the RPG Megaman, Abobo's face, Mulder, Issac's crippled face, CTHULHU!, The Mona Lisa, Wreck-It Ralph, The Real Megaman, Pissed off Abobo, The illumanati?, Ryu, Zombie, Abobo, (Again? You really like Abobo, don't you?) That octopuss company from MGS4, a beating heart, King Fulp, Issac, Newgrounds, The Terminator, Skully, Crazy Abobo, a Megaman, Pico, Snake Plisskin, and GAME OVER!
So, how'd I do?